This doctoral thesis examines the influence of computer and internet use in classrooms on the development of high school students' information and communication technology skills in Lima, Peru. The study used a quasi-experimental design comparing an experimental group that used computers and the internet in classrooms to a control group that did not. Results showed that students who used computers and the internet in classrooms developed better skills in obtaining information, teamwork, and learning strategies compared to the control group. The thesis concludes that classroom computer and internet use helps improve students' information and communication technology skills.